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IrinaVladis [17]
3 years ago
10

Question 3 of 30

Mathematics
1 answer:
nadezda [96]3 years ago
5 0

Answer:

(C) 10.4 lb

Step-by-step explanation:

If Paul added each weight before adding, as you state, he got:

Apples     3.78 ⟶  3.8

Peaches   2.12 ⟶  2.1

Oranges  4.45 ⟶ <u> 4.4 </u>

                    Total 10.3 lb

If he did it this way, he did it <em>incorrectly</em>, and his answer isn't in the list of options, anyway. That's because his method introduces round-off errors.

The correct way is to add the numbers as given, and then round off <em>at the end</em>.

Apples     3.78

Peaches  2.12

Oranges <u> 4.45</u>

   Total  10.35 ⟶ 10.4 lb

Note: When you drop a 5 f<em>ollowed by nothing</em>, you round off to the <em>nearest even number</em>.

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4 0
3 years ago
The heart rate of 10 football players is sampled. The rates measured in beats per minute are 62,74,74,64,76,6480,76,68,76
vovikov84 [41]

Answer:

The best estimate of the population mean for heart rate among football players is of 71.4 beats per minute.

Step-by-step explanation:

The best estimate for the population mean is the sample mean.

Sample mean:

Sum of all values in the sample divided by 10(size of the sample). So

\overline{x} = \frac{62+74+74+64+76+64+80+76+68+76}{10} = 71.4

The best estimate of the population mean for heart rate among football players is of 71.4 beats per minute.

3 0
3 years ago
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A scientist measured the amounts of fertilizer given to plants, the heights to which the plants grew, and the amount of fruit th
pentagon [3]

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d. Since fertilizer is in both data sets and is positively correlated to both tree height and fruit yield, it is like that tree height and fruit yield are also positively correlated.

Step-by-step explanation:

The correlation refers to the relationship between two or more variables i.e how they are interrelated to each other. It can be positive, negative, perfect, etc

As we can see in the figure that in both the data sets the fertilizer contains the same values which depict that they are positively correlated with respect to the height of tree and fruit yield that derives that the height of tree and fruit yield is also positively correleated

Here positive correlation means that the two variables moving in a similar direction i.e if one variable increased so the other is also increased

Therefore the option d is correct

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3 years ago
Physics or Chemistry. In a group of 50 students, 7 take all three
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Answer:

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There are 50 students in a group.

Using Venn diagram, we have 50=x+8+7+5+x+9+(x+3)50=x+8+7+5+x+9+(x+3) .

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x=6x=6

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Answer: x=6x=6 ; 2626 students take Maths.

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3 years ago
The morning temperature in Antarctica is -52 degrees F . how many degrees must the temperature rise to reach o degrees F ?
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It must rise +52 degrees

3 0
3 years ago
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